700–FS Electronic High Performance Timing Relays
12
Applications, Continued
Sequence
Description
Wiring Diagram
Photo SW
Pulse Converter (L)
When the Photo Switch closes the first
time, the contact TR closes to energize
Motor 1M for the predetermined time
setting. The timer will not be reset by the
opening or pulsing of the Photo SW until
the time delay is completed.
B1
A1
Pulses Are Turned Into a
Set or Predetermined
Output
1TR
A2
Time setting is 0.05s to 10h.
1TR
O.L.
15
18
Off–Delay Without
Supply Voltage (Q)
(True Off–Delay)
A1 and A2 do not require continuous
power for the off–delay time setting to be
completed. Turning the switch to On will
energize Motor 1M. When the switch is
turned to Off, or the power is removed,
Motor 1M will remain on for the time delay
setting
ON
OFF
TR
A1
A2
TR
O.L.
Star–Delta (Y)
Pushing the Start Button energizes the
relay CR and the timer TR. Both will hold
in through CR. Contact 17–18 will close
energizing the Star Contact (Y), and
starting the motor for the predetermined
time. Then contact 17–18 will open and
50ms to 65ms later contact 17–28 will
close to energize the Delta Contact (n).
Start
CR
L1
L2
Stop
Starting a Star–Delta
Motor
A1
A2
17
18
28
TR
Publication 700–2.17 April 1998
Copyright 1998 Rockwell International Corporation Printed in USA